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In the Forum: Horn-Loaded Speakers
In the Thread: Another electromagnet driver: Great Vintage Loudspeakers.
Post Subject: I disagree about the loading, and particularly the electromagnets…Posted by Romy the Cat on: 5/29/2009
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 electronluv wrote:
I have not tried  different loads for the different driver magnets but i also have not played with fix magnets for a will.
one thing is changing load to the tube really only makes a big difference in the bass regions on a mid driver the load may change distortion but when you are running a 108 DB driver the amp never really needs more then a watt, distortion is always so low at that point any way.

The change of tube loading does not affect only bass but it rather changes the whole sound of the tube.  People frequently talk that a higher loading has lower distortions but I do not thing that is has anything to do with distortions. The key in here is that harmonics that are changed with lording – higher loading get “shorter” harmonics, and less idle load has more “fatter” harmonics.  My experiments with electromagnets suggested that they are a bit on the softer side then better perm magnets, therefore if I run electromagnets then I would most likely load the tube lighter with field-coils drivers.

The caT

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